airport: Airport.o main.o Aircraft.o Runway.o 
	g++ Airport.o Aircraft.o Runway.o main.o -o airport
Airport.o: Airport.cpp Airport.h Aircraft.h Runway.h 
	g++ -c Airport.cpp
Aircraft.o: Aircraft.cpp Aircraft.h
	g++ -c Aircraft.cpp
Runway.o: Runway.cpp Runway.h
	g++ -c Runway.cpp
main.o: main.o Airport.h Aircraft.h Runway.h MsgStruct.h globlvar.h
	g++ -c main.cpp 
	
	